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Cortical mechanisms for afterimage formation: evidence from interocular grouping
Dong, Bo1,2; Holm, Linus3; Bao, Min1
2017-01-23
Source PublicationSCIENTIFIC REPORTS
Correspondent Emailbaom@psych.ac.cn
ISSN2045-2322
SubtypeArticle
Volume7Issue:0Pages:41101
Abstract

Whether the retinal process alone or retinal and cortical processes jointly determine afterimage (AI) formation has long been debated. Based on the retinal rebound responses, recent work proposes that afterimage signals are exclusively generated in the retina, although later modified by cortical mechanisms. We tested this notion with the method of "indirect proof". Each eye was presented with a 2-by-2 checkerboard of horizontal and vertical grating patches. Each corresponding patch of the two checkerboards was perpendicular to each other, which produces binocular rivalry, and can generate percepts ranging from complete interocular grouping to either monocular pattern. The monocular percepts became more frequent with higher contrast. Due to adaptation, the visual system is less sensitive during the AIs than during the inductions with AI-similar contrast. If the retina is the only origin of AIs, comparable contrast appearance would require stronger retinal signals in the AIs than in the inductions, thus leading to more frequent monocular percepts in the AIs than in the inductions. Surprisingly, subjects saw the fully coherent stripes significantly more often in AIs. Our results thus contradict the retinal generation notion, and suggest that in addition to the retina, cortex is directly involved in the generation of AI signals.

DOI10.1038/srep41101
Indexed BySCI
Language英语
Funding OrganizationKey Research Program of the Chinese Academy of Sciences(KSZD-EW-TZ-003) ; National Natural Science Foundation of China(31371030 ; 31571112)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000392418700001
WOS HeadingsScience & Technology
WOS KeywordBINOCULAR-RIVALRY ; NEGATIVE AFTERIMAGES ; PERCEIVED CONTRAST ; STRIATE CORTEX ; VISUAL-CORTEX ; ADAPTATION ; ATTENTION ; MICROSACCADES ; MONKEY ; NEURONS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/21142
Collection中国科学院行为科学重点实验室
Corresponding AuthorBao, Min
Affiliation1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100101, Peoples R China
3.Umea Univ, Dept Psychol, S-90187 Umea, Sweden
Recommended Citation
GB/T 7714
Dong, Bo,Holm, Linus,Bao, Min. Cortical mechanisms for afterimage formation: evidence from interocular grouping[J]. SCIENTIFIC REPORTS,2017,7(0):41101.
APA Dong, Bo,Holm, Linus,&Bao, Min.(2017).Cortical mechanisms for afterimage formation: evidence from interocular grouping.SCIENTIFIC REPORTS,7(0),41101.
MLA Dong, Bo,et al."Cortical mechanisms for afterimage formation: evidence from interocular grouping".SCIENTIFIC REPORTS 7.0(2017):41101.
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